Patents by Inventor Thomas Krug

Thomas Krug has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10995057
    Abstract: The present invention relates to a process for hydrogenating nitriles with hydrogen in the presence of a ZrO2-supported ruthenium catalyst.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: May 4, 2021
    Assignee: BASF SE
    Inventors: Christian Eidamshaus, Thomas Krug, Johann-Peter Melder, Joerg Pastre, Regine Helga Bebensee, Stephanie Jaegli
  • Patent number: 10414716
    Abstract: A process for producing a polyetheramine by reacting a polyether alcohol, previously synthesized in the presence of a basic potassium or sodium compound as catalyst, with ammonia in the presence of hydrogen and a catalyst in one reactor or a plurality of reactors, wherein the employed polyether alcohol when previously synthesized in the presence of a basic potassium compound as catalyst has a content of potassium ions of less than 50 wppm and when previously synthesized in the presence of a basic sodium compound as catalyst has a content of sodium ions of less than 50 wppm.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: September 17, 2019
    Assignee: BASF SE
    Inventors: Christof Wilhelm Wigbers, Wolfgang Mägerlein, Thomas Krug, Johann-Peter Melder
  • Publication number: 20190169112
    Abstract: The present invention relates to a process for hydrogenating nitriles with hydrogen in the presence of a ZrO2-supported ruthenium catalyst.
    Type: Application
    Filed: September 1, 2017
    Publication date: June 6, 2019
    Applicant: BASF SE
    Inventors: Christian EIDAMSHAUS, Thomas KRUG, Johann-Peter MELDER, Joerg PASTRE, Regine Helga BEBENSEE, Stephanie JAEGLI
  • Patent number: 9981904
    Abstract: The invention relates to a process for preparing primary amines, which comprises hydrogenating at least one nitrile in an apparatus (V1) in the presence of an unsupported cobalt catalyst to obtain at least one primary amine, with recurrent or continuous addition of at least one compound (I) to the apparatus (V1), said compound (I) comprising at least one component selected from alkali metal, alkaline earth metal and rare earth metal.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: May 29, 2018
    Assignee: BASF SE
    Inventors: Christof Wilhelm Wigbers, Wolfgang Maegerlein, Thomas Krug, Johann-Peter Melder, Thomas Heidemann, Bernd Stein
  • Patent number: 9914693
    Abstract: The present invention relates to a process for preparing ethylenediamine (EDA), where the process comprises the steps a) to c). In step a), formaldehyde is reacted with hydrocyanic acid (HCN) to form formaldehyde cyanohydrin (FACH), where the hydrocyanic acid is completely free or largely free of sulfur dioxide (SO2). The FACH prepared in this way is reacted with ammonia (NH3) to form aminoacetonitrile (AAN) in step b), whereupon a hydrogenation of AAN in the presence of a catalyst to form EDA is carried out in step c).
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: March 13, 2018
    Assignee: BASF SE
    Inventors: Hermann Luyken, Stephanie Jaegli, Michael Lorenz, Gordon Brasche, Markus Jegelka, Barbara Becker, Robert Baumann, Johann-Peter Melder, Boris Buschhaus, Thomas Krug
  • Publication number: 20170362164
    Abstract: A process for producing a polyetheramine by reacting a polyether alcohol, previously synthesized in the presence of a basic potassium or sodium compound as catalyst, with ammonia in the presence of hydrogen and a catalyst in one reactor or a plurality of reactors, wherein the employed polyether alcohol when previously synthesized in the presence of a basic potassium compound as catalyst has a content of potassium ions of less than 50 wppm and when previously synthesized in the presence of a basic sodium compound as catalyst has a content of sodium ions of less than 50 wppm.
    Type: Application
    Filed: December 1, 2015
    Publication date: December 21, 2017
    Inventors: Christof Wilhelm WIGBERS, Wolfgang MÄGERLEIN, Thomas KRUG, Johann-Peter MELDER
  • Patent number: 9828329
    Abstract: The present invention relates to a process for purifying ethylenediamine (EDA) by distillation, wherein the process comprises the steps a) and b). In step a), a mixture (G1) comprising water, EDA and N-methylethylenediamine (N-MeEDA) is fed into a distillation apparatus (D1), and the major part of the water comprised in the mixture (G1) is separated off overhead at a pressure of greater than 4.8 bara. From the bottom of (D1), the water-enriched mixture (G2) is fed into a distillation apparatus (D2) in step b). At the top of (D2), the major part of the N-MeEDA is distilled off. The stream (S3) obtained from the bottom of (D2) comprises EDA, with the components water and N-MeEDA comprised in the mixture (G1) having been largely or completely removed. Further distillation steps can optionally be carried out in order to obtain pure EDA, for example when diethylenetriamine (DETA) is additionally comprised in the mixture (G1).
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: November 28, 2017
    Assignee: BASF SE
    Inventors: Hermann Luyken, Stephanie Jaegli, Michael Lorenz, Gordon Brasche, Markus Jegelka, Barbara Becker, Robert Baumann, Johann-Peter Melder, Boris Buschhaus, Thomas Krug
  • Publication number: 20170275232
    Abstract: The invention relates to a process for preparing primary amines, which comprises hydrogenating at least one nitrile in an apparatus (V1) in the presence of an unsupported cobalt catalyst to obtain at least one primary amine, with recurrent or continuous addition of at least one compound (I) to the apparatus (V1), said compound (I) comprising at least one component selected from alkali metal, alkaline earth metal and rare earth metal.
    Type: Application
    Filed: August 25, 2015
    Publication date: September 28, 2017
    Applicant: BASF SE
    Inventors: Christof Wilhelm WIGBERS, Wolfgang MAEGERLEIN, Thomas KRUG, Johann-Peter MELDER, Thomas HEIDEMANN, Bernd STEIN
  • Publication number: 20170217874
    Abstract: The present invention relates to a process for purifying ethylenediamine (EDA) by distillation, wherein the process comprises the steps a) and b). In step a), a mixture (G1) comprising water, EDA and N-methylethylenediamine (N-MeEDA) is fed into a distillation apparatus (D1), and the major part of the water comprised in the mixture (G1) is separated off overhead at a pressure of greater than 4.8 bara. From the bottom of (D1), the water-enriched mixture (G2) is fed into a distillation apparatus (D2) in step b). At the top of (D2), the major part of the N-MeEDA is distilled off. The stream (S3) obtained from the bottom of (D2) comprises EDA, with the components water and N-MeEDA comprised in the mixture (G1) having been largely or completely removed. Further distillation steps can optionally be carried out in order to obtain pure EDA, for example when diethylenetriamine (DETA) is additionally comprised in the mixture (G1).
    Type: Application
    Filed: March 11, 2015
    Publication date: August 3, 2017
    Applicant: BASF SE
    Inventors: Hermann LUYKEN, Stephanie JAEGLI, Michael LORENZ, Gordon BRASCHE, Markus JEGELKA, Barbara BECKER, Robert BAUMANN, Johann-Peter MELDER, Boris BUSCHHAUS, Thomas KRUG
  • Publication number: 20160009633
    Abstract: The present invention relates to a process for preparing ethylenediamine (EDA), where the process comprises the steps a) to c). In step a), formaldehyde is reacted with hydrocyanic acid (HCN) to form formaldehyde cyanohydrin (FACH), where the hydrocyanic acid is completely free or largely free of sulfur dioxide (SO2). The FACH prepared in this way is reacted with ammonia (NH3) to form aminoacetonitrile (AAN) in step b), whereupon a hydrogenation of AAN in the presence of a catalyst to form EDA is carried out in step c).
    Type: Application
    Filed: February 12, 2014
    Publication date: January 14, 2016
    Inventors: Hermann LUYKEN, Stephanie JAEGLI, Michael LORENZ, Gordon BRASCHE, Markus JEGELKA, Barbara BECKER, Robert BAUMANN, Johann-Peter MELDER, Boris BUSCHHAUS, Thomas KRUG
  • Patent number: 9139511
    Abstract: The present invention relates to a process for hydrogenating nitriles by means of hydrogen in the presence of a catalyst in a reactor, where the catalyst is arranged in a fixed bed, wherein the cross-sectional loading in the reactor is in the range from 5 kg/(m2 s) to 50 kg/(m2 s). The present invention further relates to a process for preparing downstream products of isophoronediamine (IPDA) or N,N-dimethylaminopropylamine (DMAPA) from amines prepared according to the invention.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: September 22, 2015
    Assignee: BASF SE
    Inventors: Christof Wilhelm Wigbers, Christoph Müller, Wolfgang Mägerlein, Petr Kubanek, Thomas Heidemann, Johann-Peter Melder, Thomas Krug, Oliver Bey
  • Patent number: 8772548
    Abstract: The present invention relates to a process for reacting glycolaldehyde with an aminating agent in the presence of hydrogen and of a catalyst, the catalyst being activated by reducing a catalyst precursor or by reducing a passivated catalyst, which comprises effecting the reaction in the presence of a solvent and contacting the glycolaldehyde with the activated catalyst.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: July 8, 2014
    Assignee: BASF SE
    Inventors: Wolfgang Mägerlein, Johann-Peter Melder, Jörg Pastre, Jan Eberhardt, Thomas Krug, Mirko Kreitschmann
  • Patent number: 8742174
    Abstract: The present invention relates to a process for preparing ethanolamines by reacting glycolaldehyde with monoethanolamine and/or diethanolamine in the presence of a catalyst.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: June 3, 2014
    Assignee: BASF SE
    Inventors: Wolfgang Mägerlein, Johann-Peter Melder, Jörg Pastre, Jan Eberhardt, Thomas Krug, Mirko Kreitschmann
  • Patent number: 8476463
    Abstract: Processes for decreasing fumaric acid deposits in preparing maleic anhydride by heterogeneously catalyzed oxidation of a hydrocarbon with molecular oxygen. Maleic anhydride is absorbed from the crude mixture in an absorbent in an absorption column and desorbed in a desorption column, the entirety or portion of absorbent depleted in maleic anhydride, for controlled precipitation of fumaric acid, being cooled and/or concentrated by evaporating a portion of absorbent such that the difference between the concentration of fumaric acid in the recycle stream at the outlet of the desorption column under existing conditions and the equilibrium concentration of fumaric acid according to the solubility curve after cooling and/or evaporation of a portion of absorbent is ?250 ppm by weight, and the fumaric acid precipitated as a solid is removed completely or partly from the absorbent recycling system and the fumaric acid-depleted absorbent is recycled completely or partly to the absorption column.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: July 2, 2013
    Assignee: BASF SE
    Inventors: Gunther Windecker, Jens Weiguny, Alexander Weck, Ellen Dahlhoff, Wolf-Steffen Weiβker, Jörg Heilek, Thomas Krug, Ralf Freyberger
  • Publication number: 20120271068
    Abstract: The present invention relates to a process for reacting glycolaldehyde with an aminating agent in the presence of hydrogen and of a catalyst, the catalyst being activated by reducing a catalyst precursor or by reducing a passivated catalyst, which comprises effecting the reaction in the presence of a solvent and contacting the glycolaldehyde with the activated catalyst.
    Type: Application
    Filed: December 14, 2010
    Publication date: October 25, 2012
    Applicant: BASF SE
    Inventors: Wolfgang Mägerlein, Johann-Peter Melder, Jörg Pastre, Jan Eberhardt, Thomas Krug, Mirko Kreitschmann
  • Publication number: 20120259139
    Abstract: The present invention relates to a process for preparing ethanolamines by reacting glycolaldehyde with monoethanolamine and/or diethanolamine in the presence of a catalyst.
    Type: Application
    Filed: December 13, 2010
    Publication date: October 11, 2012
    Applicant: BASF SE
    Inventors: Wolfgang Mägerlein, Johann-Peter Melder, Jörg Pastre, Jan Eberhardt, Thomas Krug, Mirko Kreitschmann
  • Publication number: 20120245390
    Abstract: The present invention relates to a process for hydrogenating nitriles by means of hydrogen in the presence of a catalyst in a reactor, where the catalyst is arranged in a fixed bed, wherein the cross-sectional loading in the reactor is in the range from 5 kg/(m2s) to 50 kg/(m2s). The present invention further relates to a process for preparing downstream products of isophoronediamine (IPDA) or N,N-dimethylaminopropylamine (DMAPA) from amines prepared according to the invention.
    Type: Application
    Filed: March 22, 2012
    Publication date: September 27, 2012
    Applicant: BASF SE
    Inventors: Christof Wilhelm Wigbers, Christoph Müller, Wolfgang Mägerlein, Petr Kubanek, Thomas Heidemann, Johann-Peter Melder, Thomas Krug, Oliver Bey
  • Patent number: 8247580
    Abstract: The present invention provides a process for preparing ?-caprolactone in a purity of more than 99% by cyclizing 6-hydroxycaproic esters in the liquid phase at from 150 to 400° C. and from 1 to 1020 hPa abs., and removing and condensing the compounds which are volatile under cyclization conditions, which comprises thermally treating the remaining bottom product of the cyclization in at least one further reactor, removing and condensing volatile compounds and obtaining ?-caprolactone by distillation from the condensates.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: August 21, 2012
    Assignee: BASF SE
    Inventors: Rolf Pinkos, Gerd-Dieter Tebben, Thomas Krug, Tilman Sirch, Todd C Spengeman, Stephanie A. Bejune, Jeffrey T. Andress, Todd Gasiorowski
  • Patent number: 8217186
    Abstract: The invention relates to a process for preparing ?-caprolactone from 6-hydroxycaproic ester in the gas phase in the presence of activated carbon as a catalyst and subsequent distillation.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: July 10, 2012
    Assignee: BASF SE
    Inventors: Rolf Pinkos, Gerd-Dieter Tebben, Daniel Breuninger, Tilman Sirch, Christophe Bauduin, Maria Guixa Guardia, Thomas Krug
  • Patent number: 8163139
    Abstract: Processes comprising: providing a mixture comprising monoethylene glycol and diethylenetriamine; and subjecting the mixture to extractive distillation with a diethylenetriamine-selective solvent comprising triethylene glycol to provide a first stream comprising monoethylene glycol and a second stream comprising diethylenetriamine; wherein the first stream is substantially free of diethylenetriamine, and wherein the second stream is substantially free of monoethylene glycol.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: April 24, 2012
    Assignee: BASF SE
    Inventors: Karin Pickenäcker, Johann-Peter Melder, Bram Willem Hoffer, Thomas Krug, Gunther van Cauwenberge, Frank-Friedrich Pape